Point Estimation help

During each lecture in a statistics class, let X equal the number of times that Professor Tanis collides with a computer table at the front of the classroom. Assume that the distribution of X is Poisson with a mean (lambda).

(a) Given n observations of X, find the method of moments estimate of (lambda)
(b) Give a point estimate of (lambda) using the following 11 observations of X that were collected by Chris:

1,0,1,3,3,0,2,2,4,1,1

I could use some direction with this problem....I keep looking through this put together book my professor is constructing with no luck on how to even go about starting to solve this problem.

During each lecture in a statistics class, let X equal the number of times that Professor Tanis collides with a computer table at the front of the classroom. Assume that the distribution of X is Poisson with a mean (lambda).

(a) Given n observations of X, find the method of moments estimate of (lambda)
(b) Give a point estimate of (lambda) using the following 11 observations of X that were collected by Chris:

1,0,1,3,3,0,2,2,4,1,1

I could use some direction with this problem....I keep looking through this put together book my professor is constructing with no luck on how to even go about starting to solve this problem.

In this question, the Method of Moments says that the mean of the n observations is assumed to be a reasonable estimate for the mean of X ....